https://bugzilla.redhat.com/show_bug.cgi?id=1327979 --- Comment #22 from Miro Hrončok <mhroncok@xxxxxxxxxx> --- That brings us to: Traceback (most recent call last): File "/usr/lib64/python3.6/runpy.py", line 193, in _run_module_as_main "__main__", mod_spec) File "/usr/lib64/python3.6/runpy.py", line 85, in _run_code exec(code, run_globals) File "/usr/lib/python3.6/site-packages/ipykernel/__main__.py", line 2, in <module> from ipykernel import kernelapp as app File "/usr/lib/python3.6/site-packages/ipykernel/kernelapp.py", line 100, in <module> ConnectionFileMixin): TypeError: metaclass conflict: the metaclass of a derived class must be a (non-strict) subclass of the metaclasses of all its bases That's an ipykernel class inheriting from an ipython class. So as i thought: our ipykernel does not work without newer ipython. -- You are receiving this mail because: You are on the CC list for the bug. You are always notified about changes to this product and component _______________________________________________ package-review mailing list -- package-review@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe send an email to package-review-leave@xxxxxxxxxxxxxxxxxxxxxxx